JP4907446B2 - Lubricant processing board and product display shelf board - Google Patents

Description

  The present invention relates to a slip processing plate material and a merchandise display shelf using the slip processing plate material. More specifically, the present invention relates to a slip-treated board material and a product display shelf board provided with a surface coating film that is made into a satin surface (satin surface) with a resin powder.

  Patent Document 1 has the following description as the above-described sliding treatment plate material and a product display shelf board using the sliding treatment plate material.

  “Traditionally, products placed on the product display shelf should be rearranged manually when the products in the front row are purchased by the customer so that the products are always displayed in the front row. There is a need, and it has been a great deal of effort and labor.

  Therefore, in recent years, as a method for solving these problems, the front side of the shelf board is inclined downward, and a large number of rollers are laid in a mat shape on the product placement surface of the shelf board. Product display shelves that are automatically lined up have been developed. However, such a display shelf has a problem that it is not only easy to manufacture due to the large number of parts, but also very expensive.

  To solve this problem, a technology has been studied to control the placement of products by using a plate material with improved sliding properties on the display shelf, and by providing the plate material with an inclination so that the surface of the plate material can be slid by its own weight. Yes.

  The following patent documents are typical examples of these. The technologies disclosed in the following patent documents are all technologies that improve the slipperiness of the plate material surface using a fluorine-based resin, and Patent Document 1 uses a tetrafluoroethylene resin to make the surface slippery. Is. In Patent Document 2, a fluororesin powder is blended in a paint, and the fluororesin powder is oriented on the surface of the coating to make the surface easy to slip.

[Patent Document 1] JP-A-8-57413 [Patent Document 2] JP-A-8-183137 However, the techniques disclosed in Patent Documents 1 and 2 have the following problems.
That is, with respect to the paint to which the fluororesin powder is added, the problem is that the fluororesin powder falls off from the coating film due to friction when the displayed product slips, and the durability (durability) of the sliding property of the coating film is not sufficient. It was. In addition, when the tetrafluoroethylene resin is used, the baking temperature becomes extremely high (for example, 240 ° C. to 300 ° C. in Patent Document 1) as compared with the conventional paint, and thus the manufacturing cost increases. That was a problem. "
And in order to solve the said subject, in patent document 1, "The uneven powder coating film which contains 0.05-10 mass% of polyolefin-type additives in a coating film surface, and a dynamic friction coefficient is 0.25 or less is disclosed in patent document 1. A board material characterized in that it is formed "(Claim 1) and" The board material is used for a shelf board, and the shelf board is at an angle of 5 ° or more with respect to a horizontal plane with the surface on which the coating film is formed facing upward. A display shelf characterized in that it is inclined downward (Claim 2) has been proposed.
JP 2006-88563 A

  The present invention provides a slip-treated plate material having a satin-colored smooth coating film (surface coating film), which is not described in the above-mentioned patent documents and the like, has a good slip property and is practical. It is an object of the present invention to provide a slippery treated plate material having durability and a merchandise display shelf using the plate material.

  In order to solve the above-mentioned problems, the inventors of the present invention have made extensive efforts to develop a combination of polyamide powder and a small amount of fluororesin powder as resin powder that forms a satin finish. Knowing that wear does not easily occur, excellent slipperiness, and practical durability can be obtained, the present inventors have conceived a slip processing plate material and a merchandise display shelf having the following configurations. It is estimated that the reason why the satin-finished film has excellent slipperiness and practical durability is that polyamide has a relatively low friction coefficient and excellent wear resistance and self-lubricating properties. .

  In a slip-treated board material with a surface coating film that is made into a satin surface (satin surface) with resin powder on the substrate, the resin powder that forms the satin surface is a combination of polyamide powder and fluororesin powder. Slipperiness and surface durability are imparted to the slippery coating film.

  Hereinafter, the desirable aspect of the slipperiness processing board of the present invention is explained. Here, a product display shelf will be described as an example. Application as a product conveyance road surface forming member in factories, physical distribution, etc. where slipperiness of products (products) is required can also be expected.

  The slippery treatment board of this embodiment basically has a slippery coating film (surface coating film: satin coating film) 17 formed on a satin surface (satin surface) with resin powders 14 and 16 on the substrate 12. It is provided (see FIG. 1).

  In the case of a shelf board, the substrate 12 is a steel plate (steel plate) of 0.5 to 2.0 mmt. Other metal plates such as a stainless steel plate and an aluminum plate, and further plated ones may be used. As the board | substrate 12, what formed the primer process 20 in the board | substrate main body 19 from the viewpoint of adhesiveness with the satin coating film 17 is used normally. At this time, general-purpose shelves with coating films (for example, powder coating) 20 and 20 can be used instead for rust prevention and beautiful decoration on both sides. As the coating film forming resin of the powder coating, resins similar to the slippery coating film described later, for example, epoxy resin, polyester and the like can be used.

  In the above configuration, a combination of the polyamide powder 14 and the fluororesin powder 16 is employed as the resin powder forming the satin. In addition, slipperiness | lubricity imparting agents other than a polyamide powder and a fluororesin powder can also be added suitably. For example, powders such as ultra high molecular weight polyethylene and silicon resin can be appropriately combined.

  Here, as the polyamide, a linear aliphatic polyamide (nylon) having a relatively small friction coefficient and excellent wear resistance and self-lubricating property is usually used, but even an aromatic polyamide (aramid) is used. Good.

  Examples of nylon include nylon 66, nylon 610, nylon 6, nylon 11, nylon 12, and the like.

  Among these, nylon 66 and nylon 6 are rich in versatility. The polyamide powder is appropriately selected from an average particle diameter of 20 to 60 μm, preferably 25 to 50 μm. If the average particle size is too small, the surface is exposed and it is difficult to exert the lubricity-imparting action in cooperation with the fluororesin. When the average particle size is too large, separation from the surface coating film tends to occur.

  Further, the fluororesin means a fluorocarbon polymer, and the following polyfluoroethylenes can be exemplified.

Polytetrafluoroethylene (PTEF)
Polychlorotrifluoroethylene Polytetrafluoroethylene / polyethylene mixed system Copolymers of perfluoroalkyd vinyl ether and hexafluoropropylene Polyvinylidene fluoride Polyvinyl fluoride, etc.

  Of these, PTFE having a low surface friction resistance is desirable.

  The fluororesin powder is appropriately selected and used from the range of an average particle size of 5 to 40 μm. If the average particle size is too small, the fluororesin has a higher specific gravity than other resin components (for example, 2.1 to 2.2 in the case of PTFE) and tends to settle on the lower interface side of the surface coating, improving the lubricity. In order to achieve the above, a large amount of fluororesin is required, and the adhesiveness with the lower interface layer may be adversely affected. When the average particle size is too large, separation from the surface coating film tends to occur.

  Here, the mixing mass ratio of the fluororesin powder to the polyamide powder (the latter / the former) = 0.5 / 9.5 to 5/5, preferably 1.5 / 8.5 to 4/6.

  When the ratio of the polyamide powder is excessive, when applied to a merchandise display shelf, depending on the bottom shape of the merchandise container, it may be difficult to provide merchandise slipperiness.

  On the other hand, when the ratio of the fluororesin powder is excessive, when applied to a merchandise display shelf, the problem described in the above-mentioned Japanese Patent Application Laid-Open No. 8-57413 is that the fluororesin powder is removed from the coating film by friction when the displayed merchandise slides. The coating film slips and the durability (durability) of the sliding property of the coating film is not sufficient ”, and the coating cost is relatively increased.

  The base material resin for forming the coating film base material (matrix) 18 of the surface coating film (sliding coating film) 17 of the present invention is not particularly limited, and is for various coating materials as described in Patent Document 1 described below. Resins can be used alone or in combination.

    Modified polyester (polyester-urethane curable resin, polyester-epoxy curable resin), amino resin (melamine resin, urea resin, guanamine resin, etc.), epoxy resin, alkyd resin, amino-alkyd resin, phenol resin, acrylic resin And acrylic-polyester resins, polyesters, blocked isocyanate resins, fluororesins, silicone resins, amide resins, ABS resins, novolac resins, phenoxy resins, butyral resins, and ketone resins.

  In addition, the thickness of the lubricious coating film (surface coating film) 17 in the present embodiment is usually 30 to 80 μm, desirably 35 to 60 μm. If the coating film is too thin, it will be difficult to obtain the required durability, and if it is too thick, excessive quality will result, which is undesirable from the viewpoint of resource saving.

  Here, the content of the satin-forming resin powder (polyamide powder 14, fluororesin powder 16 and the like) in the slippery coating film (satin coating film) 17 is 5 to 30% by mass, preferably 10 to 20% by mass. To do. When the content of the resin powder is too small, it is difficult to form a satin surface on the surface and it is difficult to obtain a required surface slipperiness. On the other hand, when the content of the resin powder is excessive, the ratio of the binder (base material) resin is relatively small, and the resin powder is easily detached.

  The form of the paint used to form the satin coating is not particularly limited. However, in the case of high-mix low-volume production, special equipment is not required as in the case of powder paints, and spraying, brushing, etc. The liquid form (solution form, emulsion form, suspension; both oily (organic solvent) to aqueous) that can be applied by work is desirable.

  By the way, in Patent Document 1 paragraph 0010, “When using paints other than powder paints, such as organic solvent paints or water paints, it is difficult to secure a film thickness that is as good as that of powder paints, although the slipperiness is good. It is not preferable because the sliding durability is inferior. "

  However, in the present embodiment, it has been found that the required durability can be obtained by using a small amount of fluororesin powder together with polyamide powder as the resin powder.

  And when using the said liquid coating material, a satin finish coating film is normally formed by spray application thru | or brush coating.

  At this time, the above-described substrate is used as the substrate 12.

  Then, after applying the liquid-form paint to the product placement planned surface side of the substrate 12, a baking process is usually performed. It is not necessary if the paint is not thermosetting. Conditions for the baking treatment are not particularly limited as long as the resin powder does not melt and the base material can be cured in a reasonable time. For example, in the case of an epoxy resin, an amino resin, and an unsaturated polyester resin (all of which are thermosetting), the baking condition is 120 to 170 ° C. × 10 to 30 minutes.

  Next, the usage mode of the merchandise display shelf board 22 of this embodiment is demonstrated.

  The merchandise display shelf board 22 is used by being attached to the columns (frames) 24 and 24 of the merchandise display shelf. 2A is a perspective view in which the commodity display shelf 22 is assembled between the support columns 24, 24, and FIG. 2B is a side view.

The merchandise display shelf 22 is locked to locking holes 26 provided in the left and right support columns 24, 24 via locking claws 28a of the bracket 28, and the shelf ( (Plate material) 22 is placed and engaged. The shelf board 22 is assembled with the lubricated surface 22a facing upward, and is inclined downward toward the front at a predetermined angle (usually 5 to 15 °) α with respect to the horizontal plane. A drop prevention plate (transparent rectangular plate in the illustrated example) 30 is attached to the front end of the shelf plate 22. The product placement surface 22 a of the shelf plate 22 is a product such as a food / beverage product in a plastic bottle or a food / beverage product in a can. Are displayed in a row in the front-rear direction (depth direction). When one of the front rows is removed, the product on the rear side slides on the shelf board by its own weight and is sequentially fed out to the front side.

  Examples carried out together with comparative examples carried out for confirming the effects of the present invention will be described below.

  Apply a satin paint (Comparative Example 1, Examples 1 to 3) of each composition shown in Table 1 on a general-purpose shelf (steel plate), and bake and cure under conditions of 150 ° C. × 20 min. A shelf board of each example having a coating thickness of 40 μm was prepared.

こうして調製した棚板を、傾斜角度8°になるように組み付けた後、表２に示す仕様の各飲食品ボトル・缶（サンプル）について、下記滑り性能試験及び耐久性能試験を行った。

After assembling the shelf board thus prepared so that the inclination angle was 8 °, the following sliding performance test and durability performance test were performed on each food and beverage bottle / can (sample) having the specifications shown in Table 2.

  The indication in parentheses after each beverage bottle / can in Table 2 means the following bottom shape.

-Chrysanthemum bottom: peculiar chrysanthemum type (concave / convex) bottom surface for carbonated beverages in PET bottles-Planar bottom: bottom surface where the entire outer peripheral surface of the PET bottle is grounded Bottom of the press ・ Press bottom: Bottom of the can where the bottom and side are manufactured in one piece <Sliding performance test>
Each of the displayed beverage bottles / cans and 10 bottles were slid from the back of the shelf plate to the front end stop plate at different positions and visually judged according to the following criteria.

      (Double-circle): The whole number slip property is favorable.

      ○: Slow sliding speed appears rarely but is generally good.

      □: Sliding speed is slightly slower overall, but nothing stops.

<Durability test>
For each beverage bottle / can displayed at the same location, the slipperiness after sliding the display from the back of the shelf plate to the fall prevention plate was determined in the same manner as described above.

<Test results and analysis>
From the test results shown in Table 2, it can be seen that the fluororesin / nylon mixed mass ratio (PTFE / PA6) is stable in the range of PTFE / PA6 = 1.5 / 8.5 to 4/6, and durability is obtained. When durability is important, the range of PTFE / PA6 = 1.5 / 8.5 or more and less than 2/8 is desirable, and when importance is attached to slipperiness, the range of PTFE / PA6 = 2/8 or more and less than 4/6 is desirable. I understand. In the case where the slip property is particularly emphasized and the durability is slightly sacrificed, it can be seen that the practical application is possible even with PTFE / PA6 = 4/6 or more. In a normal use mode, it is said that there is no problem with the number of sliding repetitions of 15,000.

It is a model sectional view of the slipperiness processing board material in the present invention. (A) is the perspective view which assembled | attached the merchandise display shelf board between support | pillars, (b) is the side view.

Explanation of symbols

12 Substrate 14 Paste-forming resin powder (polyamide powder)
16 Satin-forming resin powder (fluorine resin powder)
17 Lubricant coating (surface coating, satin coating)
18 Paint base material (matrix)
22 Product display shelf board

Claims (5)

It is made of a slip-treated plate material provided with a slippery coating film, and the surface of the slippery coating film can be assembled to a shelf frame with a forward inclination angle of 5 to 15 ° as a product placement surface. Product display shelf board,
The slippery treatment plate comprises a slippery coating (surface coating) formed on a satin surface (satin surface) with resin powder on a substrate,
In the configuration in which the resin powder forming the satin is a combination of polyamide powder and fluororesin powder, and practical slipperiness and surface durability are imparted to the slippery coating film,
The polyamide powder is selected from an average particle size range of 20 to 60 μm, and the fluororesin powder is selected from an average particle size range of 5 to 40 μm, and the mixing mass ratio of the fluororesin powder to the polyamide powder (the latter / the former) ) = 1.5 / 8.5-4 / 6, and
While the thickness of the lubricious coating film is 30 to 80 μm, the content of the resin powder in the coating film is 10 to 20% by mass,
Product display shelf board characterized by that. The merchandise display shelf board according to claim 1, wherein a mixing mass ratio of the fluororesin powder to the polyamide powder (the latter / the former) is 1.5 / 8.5 or more and less than 2/8 . The merchandise display shelf board according to claim 1, wherein a mixing mass ratio of the fluororesin powder to the polyamide powder (the latter / the former) is 2/8 or more and less than 4/6 . The commodity display shelf board according to claim 1, 2 or 3, wherein a base coat film is further formed between the slip coat film and the substrate in the slip processing plate material . The manufacturing method of the merchandise display shelf board characterized by forming the slippery coating film in the slipperiness processing board material which forms the merchandise display shelf board as described in any one of Claims 1-4 with a liquid paint.

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